Validation and Confirmatory Factor Analysis of Persian Version of Kellner's Emotional Inhibition Scale in Clinical Population of Lorestan Province

The aim of the present study was to validate the Persian version of the Kellner's Emotional Inhibition Scale.

The statistical population of the study included all people who referred to counseling centers in Khorramabad, Doroud and Boroujerd in 2020 and 2021, from which 400 people were selected by convenience sampling. In the present study, in order to determine the factor validity, the statistical method of confirmatory factor analysis, in order to determine the reliability of the questionnaire, the Cronbach's alpha coefficient method and in order to evaluate the simultaneous validity of the instrument, the Deficits in Executive Functioning Scale by Barkley (2011) were used.

In the present study, Cronbach's alpha coefficient for the whole questionnaire was 0.79. The results of confirmatory factor analysis confirmed the four-factor structure of the Kellner's Emotional Inhibition Scale (verbal inhibition, Timidity, disguise feeling, self-control). The results of the correlation between the Kellner's Emotional Inhibition Scale and the Deficits in Executive Functioning Scale showed a significant correlation between the components of the two tools and the simultaneous validity of the Kellner's Emotional Inhibition Scale.

Since the fitness indices of the factor analysis model had a good fit and the Cronbach's alpha coefficient indicated the internal consistency of the items of this tool, this questionnaire has good validity and reliability, which can be used to assess emotion inhibition in future research.